When dealing with extensive plumbing problems, it's important to consult a professional to ensure proper repairs and safety measures. But here are a few tips to help DIYers replace sagging pipes.
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Once it has been determined where the pipe dips and water has accumulated, mark and clear the surrounding area. The floor will be jack-hammered through so the underground pipe can be accessed. Make sure any major appliances -- such as laundry units or water heaters -- are out of the way.
Utilize professional help to assist with breaking through the floor. With the faulty pipe exposed, consult a professional plumber and reassess the problem. To replace the sagging pipe, remove the old existing pipe.
Properly connect a new PVC pipe in its place with the standard minimum of 1/4" slope per foot toward the street. Make sure all of the pipes are properly sealed and connected.
Backfill the hole and cover it with quick-setting cement. Finish the floor with new tiling.
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